Astronomers discover 83 supermassive black holes 13 billion light-years away

Agencies
March 15, 2019

Washington, Mar 15: Astronomers have discovered 83 quasars powered by supermassive black holes 13 billion light-years away from the Earth, from a time when the universe was less than 10 per cent of its present age.

“It is remarkable that such massive dense objects were able to form so soon after the Big Bang,” said Michael Strauss, a professor at Princeton University in the US.

“Understanding how black holes can form in the early universe, and just how common they are, is a challenge for our cosmological models,” Strauss said in a statement.

This finding, published in The Astrophysical Journal, increases the number of black holes known at that epoch  considerably, and reveals, for the first time, how common they are early in the universe’s history.

In addition, it provides new insight into the effect of black holes on the physical state of gas in the early universe in its first billion years.

Supermassive black holes, found at the centers of galaxies, can be millions or even billions of times more massive than the Sun.

While they are prevalent today, it is unclear when they first formed, and how many existed in the distant early universe.

A supermassive black hole becomes visible when gas accretes onto it, causing it to shine as a “quasar.” Previous studies have been sensitive only to the very rare, most luminous quasars, and thus the most massive black holes.

The new discoveries probe the population of fainter quasars, powered by black holes with masses comparable to most black holes seen in the present-day universe.

The team used data taken with “Hyper Suprime-Cam” (HSC) instrument, mounted on the Subaru Telescope of the National Astronomical Observatory of Japan, which is located on the summit of Maunakea in Hawaii.

The researchers selected distant quasar candidates from the sensitive HSC survey data.

They then carried out an intensive observational campaign to obtain spectra of those candidates, using three telescopes: the Subaru Telescope; the Gran Telescopio Canarias on the island of La Palma in the Canaries, Spain; and the Gemini South Telescope in Chile.

The survey revealed 83 previously unknown very distant quasars.

Comments

ABDUL AZIZ SHE…
 - 
Saturday, 16 Mar 2019

SUBHAANALLAH

 

 
ALLAH ALMIGHTY CREATED EVERTHING  INCLUDING WHOLE UNIVERSE AND WHAT IS IN IT,

HUMAN BEING CANNOT REACH TO UNDERSTAND IT,  HUMAN LIFE NOT SUFFEICENT TO REACH AND KNOW EVERYTHING.

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
News Network
March 13,2020

New Delhi, Mar 13: Delhi's Tis Hazari Court on Friday sentenced expelled Bharatiya Janata Party (BJP) MLA Kuldeep Singh Sengar and six others to 10 years imprisonment for the death of Unnao rape survivor's father. Sengar is already serving life imprisonment for raping the minor.

While sentencing them, District Judge Dharmesh Sharma said, "There can be no denying that rule of law was broken. Sengar was a public functionary and had to maintain the rule of law. The way the crime has been committed, it does not call for leniency."

Sengar and his brother Atul has been directed to give 10 lakh compensation to family of the victim for loss of their father. "There are four minor children involved, three girls and one boy. They have also been uprooted from native place," the judge said.

Seven people, including Sengar, his brother and two police personnel, were held guilty for culpable homicide and criminal conspiracy, earlier this month.

The case pertains to the death of rape survivor's father in custody on April 9, 2018. It was alleged that he was assaulted following a quarrel with some of the accused in the case.

He was taken to the police station and then framed for allegedly possessing an illegal firearm. Pursuant to this, he was sent to custodial remand, during which he died.

The case was transferred to Delhi from a trial court in Uttar Pradesh on the Supreme Court's directions in August last year. Both the death and illegal firearm case was later clubbed by the court.

During the arguments on sentencing on March 12, Sengar had told the court that he should be "hanged and acid poured into his eyes if he has done anything wrong".

The former MLA had also raped the daughter of the deceased in 2017 in Uttar Pradesh's Unnao district and was sent to jail for "remainder of his natural biological life", last year.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
News Network
August 8,2020

Kozhikode, Aug 8: Minister of State (Mos) for External Affairs V Muraleedharan on Saturday reached Kozhikode where Air India Express flight (IX-1344) crash-landed yesterday. 

He is likely to meet those injured in the crash and their family members.

At least 17 people including two pilots have lost their lives in the incident. However, the four-cabin crew members are safe, said the Air India Express in a statement. 

The injured are admitted to hospitals in Malappuram and Kozhikode, as per the state government officials.

Informing about his visit to Kozhikode, Muraleedharan tweeted: "Taking off to #Calicut by @airindiain
special flight. Hope to visit the crash site at the Calicut Airport and also meet those injured in the crash and their family members."

Muraleedharan on Friday expressed grief after an Air India Express plane carrying 190 passengers including 10 infants skidded while landing at Karipur Airport in Kozhikode.

"Deeply anguished to hear about the mishap in Calicut airport involving the flight from Dubai to Calicut. Was informed that the plane overshot the runway and seemingly nosedived," the Minister tweeted.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
Agencies
January 4,2020

New Delhi, Jan 4: In more troubles for the former Finance Minister and senior Congress leader P Chidambaram, the Enforcement Directorate (ED) on Friday questioned him for over six hours in its probe into the Air India aircraft deal case, first time since his release from Tihar jail almost a month ago.

A senior ED official told IANS, "We questioned Chidambaram for over six hours today in the ongoing probe into the Air India deal with Airbus."

According to financial probe agency officials, Air India had planned to buy over 111 aircraft from Airbus and Boeing during the erstwhile United Progressive Alliance (UPA) government in 2009. This is the first time the ED has questioned the senior Congress leader in the Air India deal case.

The questioning of Chidambaram came for the first time since his release from the Tihar jail where he spent 106 days in connection with the INX Media money laundering case. He was released from Tihar on December 4 last year after he was granted bail by the Supreme Court. The former finance minister is also being investigated by the ED in a separate money-laundering cases of Aircel-Maxis deal.

An ED official said the contract to buy 43 aircraft from Airbus was finalised by a panel of ministers headed by Chidambaram in 2009. According to the ED, when the proposal to buy 43 aircraft from Airbus was sent to the Cabinet Committee on Security (CCS), there was a condition that the aircraft manufacturer would have to build training facilities and MRO (Maintenance, Repair and Overhaul) centres at a cost of Rs 70,000 crore. But later, when the purchase order was placed, the clause was removed.

The name of another UPA minister, Praful Patel, had also come up in the alleged scam in a charge sheet filed by the ED against corporate lobbyist Deepak Talwar on March 30 last year. Talwar was arrested last year by the ED after he was deported from the UAE.

The ED is probing the Air India-Indian Airlines merger; purchase of 111 aircraft from Boeing and Airbus at Rs 70,000 crore; ceding profitable routes and schedules to private airlines, and opening of training institutes with foreign investment.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.